"Does this mean no more shtupping of the cabin crew in the cockpit?"
You have to be a yoga master to "make your own entertainment" in a modern airliner cockpit. The space is as cramped at cattle class in some.
Now if you want to tie up a lav for a few minutes, Deviant Ollam has a good presentation on doing the wild thing in many different models of aircraft. He even has tips on how to block the lock with Legos so staff can't bypass it to poke their head in to order you back to your seats. Not that they bother. Better the lav than trying to use one or two of those thin blankets to try and get away with a little naughty in the main cabin.